As a substitute for traditional plastic bags, all kinds of environmental protection bags, which are entrusted with the hope of environmental protection and endowed with the name of environmental protection, are popular, and now they have become a trend of flooding. The result is even more serious than the pollution of plastic bags. A simple knowledge we need to know is that environmental protection bags are not in the literal sense of environmental protection, but can realize relative environmental protection under certain conditions. The embarrassing reality is that there are no conditions to meet at present. The difference between non-woven environmental protection bags and plastic bags is that non-woven environmental protection bags are easy to degrade, while plastic bags are difficult to degrade. From this point of view, non-woven bags can naturally be called environmental protection bags.
At present, the environmental protection bags used by people are divided into paper environmental protection bags, plastic environmental protection bags, non-woven environmental protection bags and cotton and hemp environmental protection bags according to their materials, among which non-woven bags are used more. The UK Environment Agency (ukea) has studied the resource consumption of these bags, and the results are surprising: in a typical use and discard mode, consumers should use plastic bags and reuse them at least once if they want to minimize pollution and carbon emissions - for example, as garbage bags or other secondary uses. Of all the types investigated, traditional plastic bags made of high-density polyethylene (HDPE) have the least environmental impact each time they are used. In contrast, non-woven bags need more resources in the process of manufacturing and transportation, which leads to the potential possibility and severity of global warming far more than other materials.
Although plastic bags are not easy to degrade, they require very few resources to manufacture and transport. The carbon emissions, waste generation and by-products of plastic bags are lower than those of other materials. A study by the UK Environment Agency has calculated that the carbon consumption of each plastic bag is slightly less than 2000 grams. In order to achieve the same single use carbon consumption as plastic bags, paper bags need to be used seven times, non-woven bags made of recycled polypropylene need to be used 26 times, and cotton non-woven bags need to be used 327 times.
The "conditions to be met" for environmental protection mentioned above is to achieve the above usage times. In fact, the vast majority of non-woven bags are discarded after only one use or even no use at all. The abundant quantity of non-woven environmental protection bags urges consumers to treat them as disposable products, which goes against their original design intention. This low-level and unfocused frenzy was intended to avoid the impending ecological disaster, but it seems to have helped instead.
